Die-casting machine



May 23, 1933.. W. J. DUNN@ mmm.

DIE CASTING MACHINE Filed Nov. 14, 1929 2 Sheets-Sheet 2 E g5@ 2/ l@ /3 L 4 g" ""m i? r 1,23 l1; l 4i1 /gvu :l j 1 Hl x u 26 H 7 "1: ulill l? la 25' /E l 5 ffl TORHE Y6 Patented May 23, 1933 j I UNITED )sT-Aras PATENT; OFFICE Imran' J. DURING, or medusa', NEW Yoan, AssIcNon To PRneIsroN .CASTINGS COKPANY, INC., OF SYRAGUSE, NEW YORK,

DIE-cas'rINe MACHINE Application lediNovember 14, 1929. `Serial No. 407,157.

This invention relatesl to certain new and useful improvements in die casting machines and more particularly 'tothe construction and operation'of the delivery pot for conveying themolten metal from the melting vp'ot to the die or mold. y Y The mainv objects of the `lnventionare to produce a die casting machine which will be durable in constructiomf positively' and .10 easily operated at a maximum degree of safety to the operator.

In carrying out these objects, have con structed a ladle or delivery pot of the gooseneck type having a pressure chamber therein ,adapted to contain molten metal, and an ing relation with a 2@ 5 air under pressure, when the delivery' pot 3Q the structure and relation of the is in the casting position for the urpose '.ofutilizing said fluid for discharging the metal from the pot. a l.. Y

.'Uther objects and advantages relating to parts and the operation thereof will more fully appear from the following description taken in connection withthe accompanying drawlngs, in-

`Figure l is a side elevation of a portion of a die casting machine embodying the va-- rions features of this invention.

is a longitudinal'vertical sec,

Figure 2 of the device as shown 1n Figure the plane of the line 2?-2, Fig-.V

consists of a frame or lire box -1- having a furnace chamber -2- therein. The upper portion ofthe furnace chamber -2- is closed by a cover plate -'3- secured to the top 'surface of ,the frame -1-. A suitable melting pot, las 4 adapted to contain molten metal, is secured to the plateV -.-3-

and disposed within the furnace chamber.

A suitable die-supporting plate adapted to have securedthereto the sprue die section of a suitable die 'or mold, may be either secured to the frame -1- or mounted on a suitable carriage for movement to and from the casting position in anyl well lknown manner. Y

The plate -15- is provided with a gate -6- which registers with the inlet port of the die and is adapted to be engagedby a suitable metal deliverynozzle -'7` which is secured to -the forwardl end of a spout `8- provided on the delivery pot #9e-.-

The plate -5- is also provided with' a rearwardly extending boss -10- which, in

.this instance, 1s positloned in vertical alignment with the gate t3-- and may be secured to or be made integral with the rear vertical face of the plate-5+- and positioned in a plane above the gate -6. rEhe boss -10-, in this instance, isjprovided with a passageway or duct llwhich extends inwardly from the rearv faceof the boss, a short distancevand then. upwardly to thetop outer surface thereof. The top or upper end of the ductf-llmay be connected by a suitable conduit 12 to any suitable control means or valve, not shown, for the Huid, which in -turnl may lbe connected to a convenient source adapted to supply fluid, as air, under pressure, when the delivery pot is in the casting position for discharging the molten metal from said pot into the die or mold.

The other or rear end of the duct 11 is in communication with a fluid discharge nozzle -13 which is secured to the rear portion ofthe boss '-lO-F and adapted to be engaged :byl afluidreceiving nozzle -14- which is secured to theupper portion ofthe the upper portion of the vertical end -16- of the delivery pot by screws or bolts -l9. The bracket l8 extends upwardly from said portion -16- and forwardly therefrom and has the fluid receiving nozzle -leirsecured to the upper forward portion of the bracket l8- in a plane above and parallel with the metal delivery nozzle -7-,- and spaced therefrom a distance equal to the vertical distance between the gate 6and Huid delivery nozzle -13-. so that when the delivery pot is in the casting position with the metal delivery nozzle --7 engaging the gate \-6-, the {duid-receiving nozzle 14- will, be in operative engagement with the fluid-delivery nozzle -13- for receiving fluid, as air under pressure, to discharge the molten metal from the chamber -15-, said fluid-receiving nozzle i4-'- bein connected with. the chamber A15v by a uct -19` `provided in lthe bracket 18- and which extends from the nozzle -14- to the upper end of the chamber -15.

The bracket -18-4, in this instance, ex-` 'tends forwardly beyond the vertical portion -16- of the delivery potl -9 and is provided with a horizontally disposed U- shaped slot 20- in the undersurface thereof, said slot being adapted to receive therein port the delivery pot -9- and also to move it `from the submerged or chargin position within the melting pot i4- to t e casting position with the nozzles -7- and -14- 1n engagement with the te -`6- and nozzle e13- respectively.

he shaft -22 extends transversely of the machine and is journaled in suitable bearin 24;- posi' tioned one at either side of t e machine and secured to the face of the cover late -3- and-positioned at the rear of the l ie-'supporting plate -5-, at such. a that when thev pot '9- is in the casting position, thev within the meltin the. rack -25- to roc tical plane fromtlhe axis thereof so that by rocking the shaft in an anti-clockwise direction Figures 1 and 2, the delivery pot will be carried rearwardly and downwardly from the casting position about the axis of the shaft to bring said pot in the submerged position pot -4-. The crankshaft 22- may e rocked by any suitable means as by a rack -25 and a gear segment 26. The gear segment 26- is secured to one end of the crank-shaft ,-22-which extends outwardly beyondthe adjacent bracket-24. while the rack 25- is slidably mounted in a supporting bracket -27 which is secured to the adjacent-side of the frame l for maintaining the .rack in meshing engagement with the gear segment 2d-f during th'e reciprocating movement of said rack. The rack -25- may be reciprocated at the 'desired time by any suitable means as by the main driving mechanism of the machine, not shown. .f

The delivery pot -9--vis-also supported 'against undue rocking movement about the crank arm -,21. by a shaft f28 secured at one end to a rearwardly extending arm -18- provided on the bracket -18- and is slidably mounted at the outer end thereof In operation with` the delivery ot in the casting position, as illustrated in igures 1 and 2, the delivery pot. -9- may now be moved to the charging osition b operating l? the sha t -'-22- in an anti-clockwisedirection. This will carry the potf-9 rearwardly and downwardly and the supporting shaft -28-fwil1 be also carried rearwardly through the arm -29- and-at the same time, will rock about the pivot 3G-,- which will carry the delivery nozf zle -7- downwardly into the submerged position within the melting ot -4 asillustrated dotted lines in igure 2.

' This w' permit the molten metal to flow through the delivery nozzle 7, and duct -`17- into the .chamber ,-15- thereb charging said chamber with themoltenmeta' Then'by moving the rack in the opposite direction to rotate the shaft ^22-' in a clockwise direction, Vthe delivery pot will be brought upwardly and forwardly and at the same time, the pot will be rocked about the axis of the crank arm'.21- by the action of the suplporting shaft`28 as it moves through t metal delivery nozzle v-7- into caatin engagement with the gate 6 and the uidreceivin nozzle -14- into registration with the' ilui delivery nozzle -13-.

The pot -9- is now 'in position to receive the fluid under pressure which may be admitted through the duct 12-, nozzles -13-, 14- and duct 19 to the upper portion of the chamber 15- for d1schar g the molten'metal from said chamber t rough the duct -17- nozzle -7- and te -6- into the interior of the die or mol after which the pot -9- is a ain ready to be returned to the submerge or chargingI` position within the meltin pot -4-. his return movement of the elivery pot will cause the fluid-receiving nozzle- -14- to be disengaged from the nozzle 13- andthereby disconnect the chamber l5- from the source of uid supply which will automatically prevent the iuid'from being used to act upon the metal contained in the chamber l5- although the control valve for said fluid may be accidentally or unintentionally opened which would ermit the fluid to pass through the con uit 12-, duct 11 and out through the nozzle -13- to the atmosphere and thereby prevent accidents or injury to the operator,

the melting pot to a position above said meltin pot and return, and guide means for the deIivery pot comprisin a shaft secured to the rear portion of the elivery pot and slidabl mounted for longitudinal movement in a p lvoted bracket and adapted to rock about the' fixed-axis of said bracket to determine the position of the delivery nozzle during the rising and lowering of the delivery pot. In witness whereof I have hereunto set my hand this 29th day of October, 1929.

WILLIAM J. DURING.

Although I have shown and particularlyk described the preferred embodiment of this invention, I do not wish to be restricted to the exact details of the structure shown as various changes ma readily be made both in the construction o the parts andthe relation thereof, without departing from the spirit of this invention, as set forth in the ap nded claims.

' claim:

1. In a die casting machine in combination with a melting pot for containing molten metal, a delivery pot havinga pressure chamber therein and a delivery nozzle connected with said chamber, a crank shaft pivotally secured to the forward portion of the pot said shaft being disposed transversely of the melting t and ournalled at opposite sides thereo operatm with the shaft t0 cause t e delivery nozzle to be moved from the submergedposition within the melting (pot to a position above said melting pot an return, and means secured to the rear portion of the delivery pot and slidably supported to rock about a fixed axis for determlning the position of the delivery nozzle during t e rising and lowering movements of the delivery pot.

2. In a die. casting machine in combination with a melting pot for containing molten metal, a delivery pot having a pressure chamber therein and a delivery nozzle connested with said chamber, supporting means,

comprising a crank shaft plvotally secured to the forward portion of the delivery pot said shaft being disposed transversely of the meltin pot and journalled at opposite sides means connected thereo operating means connected with the shaft to cause the delivery nozzle to be' moved from the submerged position within 

